Smoke-pipe cleaner-head.



G. PETRICH.

SMOKE PIPE CLEANER HEAD.

APPLICATION man APR. 15. 1915.

1 1 62,893 Patented Nov. 30, 1915.

MOM 4 OLUMDIA PLANOGRAPH c0 WASHINGTON D c GUSTAV PETRICH, orwEs'rsmLD,Wisconsin."

SMOKE-PIPE CLEANER-HEAD.

Application filed April 15, 1915. Serial No. 21,550.

i '0 all whom it may concern.

Be it known that I, GUSTAV PETRIGH, a

citizen of the United States,and resident of lVestfield, in the countyof Marquette and State of Wisconsin, have invented certain new anduseful Improvements in Smoke- Pipe Cleaner-Heads; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof.

My invention has for its object to provide a simple, effective andeconomical smokepipe cleaner head.

The construction and arrangement of said invention embodies a pair ofsemi-conical scraper-blades loosely mounted upon companion sets of studscarried by a handle,

the said studs carrying coiled springs whereby the blades areindependently yieldable and within limits compensatory, the coiledsprings being adjustable as to tension.

Thus, when the semi-conical scraper-blades.

are assembled they together form a bro-ken hollow cone fructum underspring tension, whereby different sizes in pipes can'be op erated upon.

lVith the above objects in view the invention consists in certainpeculiarities of construction and combination of parts as hereinafterset forth with reference tothe accompanying drawings and subsequentlyclaimed.

In the drawings Figure 1' represents a sectional elevation of a scraperembodying the features of my invention, the section being indicated byline 1-1 of Fig. 2, with the handle broken away, and Fig. 2, acrosssection of the same, the section being defined by line 2-2 of Fig.1.

Referring by characters to the drawings, 1 represents the head end of ahandle having spaced apertures, through one of which a long stud 2extends in opposite directions. A correspondingly arranged short stud 3extends through the rear aperture, said studs being in the samelongitudinal plane. VVa-shers 4 are fitted over the studs in engagementwith the handle and coiled springs 5, 5, 6, (3, are also fitted over thestuds and adapted to seat upon the washers. Between the heads 2, 3, ofthe respective long and short studs and the ends of the coiled springs,are

Specification of Letters latent.

7, 7, which Patented Nov. so, 1915.

fitted apertured semi-conical scraper-blades spaced apart longitudinallyto form clearance throats a, as best shown in Fig. 2. The outer scrapingedges Z) of the blades are upon a higher plane than the heads of thestuds, whereby the same are protected to clear the pipe surface to becleaned, which pipe surface is indicated by dotted lines in Fig. 1. Theapertures 7 of the semi-conical through which the studs extend, arepreferably greater in diameter than said studs, whereby a limited amountof play is permitted in all directions when the blades are subjected toa scraping strain, this provision being for the purpose of permittingthe cutting edges 5 of the blades to conform to the circular surface ofthe pipe.

By this simple construction it is apparent that a cleaner head isproduced which is simple in construction and effective due to the factthat the blades are rendered yieldable and compensatory to insure aperfect scraping operation.

It is also possible to adjustthe tension of the springs by turning theloose heads of the studs which are in the form of nuts in threaded unionwith said studs and when so adjusted it is obvious that, owing to thefact that the" studs are capable of movement in their handle apertures,both sets of springs may be simultaneously tensioned.

I claim:

1. A smoke-pipe cleaner-head comprising a handle, a pair of transverselydisposed studs extending from the handle, a pair of aperturedsemi-conical scraper-blades loosely mounted upon the pair of studs, andcoiled springs surrounding the studs interposed between the handle andsaid scraper-blades, the cutting edges of the blades being at a greaterdistance from the axis of the handle, than the stud heads.

2. A smoke-pipe cleaner-head comprising an apertured handle, a short andlong stud slidably mounted in the handle apertures blades,- whenassembled, are

having heads positioned at different disedges of the blades being spacedapart to the county of Marquette and State of Wisform clearance throats,and coiled springs cousin, in the pres surrounding the studs interposedbetween the handle and said scraper-b1ades In testimony that Iolaimstheforegoing I have hereunto set my hand at Westfield, in

Witnesses ence of two Witnesses.

GUSTAV PETBICH.

F. W. MILLER, G. A. DREWrrz.

Copies of this patent may be obtained for five eents each, by addressingthe Commissioner of Patents.

Washington, D. C.

